@semcore/chart/lib/es6/utils/normalizeCurvePoints.js

Semrush Chart Component

import _defineProperty from "@babel/runtime/helpers/defineProperty";
import hasNull from './hasNull';
function replaceNullValue(targetPoint, sourcePoint) {
  var field;
  if (targetPoint.x === null || targetPoint.value && targetPoint.value[0] === 0) field = 'x';
  if (targetPoint.y === null || targetPoint.value && targetPoint.value[0] === 0) field = 'y';
  return Object.assign({}, targetPoint, field ? _defineProperty({}, field, sourcePoint[field]) : {});
}

/**
 * Normalizes the array of points for the plot.
 * Fills points without data with points from neighboring ones.
 * It is necessary to continue the dotted line in those places where there is no data on the edges.
 * @param points
 * @param dataKey
 */
export default function normalizeCurvePoints(points, dataKey) {
  var curvePoints = Array.from(points);
  if (hasNull(curvePoints[0], dataKey)) {
    var firstDefinedIndex = points.findIndex(function (point) {
      return !hasNull(point, dataKey);
    });
    curvePoints.forEach(function (point, index) {
      if (index < firstDefinedIndex) {
        curvePoints[index] = replaceNullValue(point, points[firstDefinedIndex]);
      }
    });
  }
  var length = curvePoints.length;
  if (hasNull(curvePoints[length - 1], dataKey)) {
    var definedIndex = curvePoints.map(function (i) {
      return i;
    }).reverse().findIndex(function (point) {
      return !hasNull(point, dataKey);
    });
    var _firstDefinedIndex = length - 1 - definedIndex;
    curvePoints.forEach(function (point, index) {
      if (index > _firstDefinedIndex) {
        curvePoints[index] = replaceNullValue(point, points[_firstDefinedIndex]);
      }
    });
  }
  return curvePoints;
}
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